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Differences in ABA metabolism in reaction to water deficit were found in leaves and roots of four Vitis species with differing drought tolerance: Vitis vinifera, Vitis champinii, Vitis riparia, Vitis riparia, and Vitis vinifera x girdiana. After moderate or severe WD, concentrations of ABA and ABA-related metabolites increased after moderate to severe WD, depending on species, organ, and time. The number and ABA concentration in drought-tolerant Ramsey increased earlier and to a greater extent than other species.
Source link: https://doi.org/10.20870/oeno-one.2022.56.4.5483
At least one heavy metal based isoprenylated plant proteins are identified by at least one heavy metal associated domain and a C-terminal isoprenylation motif. Hordeum vulgare farnesylated protein 1, a barley HIPP, is restricted during drought stress as a result of abscisic acid and leaf senescence. The overexpression of HvFP1 in normal leaf senescence results in the postponement of leaf senescence, but not in the case of rapid, drought-induced leaf senescence. The increase-of-function of HvFP1 positively influences the expression of the genes that regulate leaf formation, photosynthesis, and chlorophyll biosynthesis, according to the genome-wide transcriptomic study by RNA sequencing. Interestingly, many of those genes encode zinc binding domains, implying that HvFP1 may function as a zinc supplier via its HMA domain. The findings reveal that HvFP1 is involved in a crosstalk between stress responses and growth control pathways.
Source link: https://doi.org/10.3390/plants11212851
The leaves of three treatments of EF and EI plants were sprayed with ABA solution; fluridone, the ABA biosynthesis inhibitor product; and distilled water, respectively, to help understand how the Epichloeb endophyte improves drought tolerance, drought tolerance, DHG plants grown under 20% and 60% soil water conditions; and distilled water, respectively. Thus, it is likely that ABA was involved in the moderating effect of Epichlou00eb endophytes on DHG plants exposed to drought by maintaining growth and increasing photosynthetic effectiveness, according to this.
Source link: https://doi.org/10.3390/jof8111140
As a common ancient tetraploid, soybean is a common oil crop species and plays a vital role in providing edible oil, plant protein, and animal fodder around the world. As a common ancient tetraploid, soybean is a key oil crop species and is an important oil crop species. As global warming increases, the yield of soybean in the field is often severely restricted by drought stress. SNF1-related protein kinase 2 and type A protein phosphatase 2C family members are essential components of plant tolerance to drought stress, and they have been shown to play important roles in increasing plant tolerance to drought stress, but genetic evidence supporting this belief is currently lacking in soybeans. GmSnRK2s' expression in response to ABA and drought signals is not always the same as that of Arabidopsis SnRK2 homologous genes. In addition, miRNA and GC-A s and GmSnRK s were targeted by miRNA and analyzed by degradome sequencing, which may have multiple roles in the crosstalk between ABA and drought signals and other stress signals.
Source link: https://doi.org/10.3390/ijms232113166
According to a Metabolome review, white-blush components mainly consist of p-hydroxyphenyl lignin and aiacyl lignin. In conclusion, ABA plays a key role in lignin biosynthesis, which is vital to the development of white blush in fresh-cut carrots. This is the first study to reveal the physiological and molecular causes of white blush in fresh-cut carrots, providing a basis for white-blush control in fresh-cut carrots.
Source link: https://doi.org/10.3390/ijms232112788
This research used a variety of approaches, including data collection and analysis of physicochemical parameters, to investigate strigolactone and abscisic acid's effects on indicators of ripeness, phenolic compounds, and antioxidant activity. Each treatment could raise sugar content and reduce acid content, particularly in the ABA + TIS group, where the control group's contents were 1 brix higher and 1. 11 g/L lower than the control group. Also, the ABA and ABA + TIS groups could have a major role in phenolic accumulation, especially anthocyanins, which were elevated by at least 1. 5 mg/g at each stage.
Source link: https://doi.org/10.1016/j.fochx.2022.100496
Also increase berry sugars while decreasing anthocyanins, resulting in a lack of sugars and anthocyanins in grape berries. Vitis vinifera cv. To restore the balance of sugars and anthocyanins, carbon limitation by leaf removal, and exogenous abscisic acid were applied either separately or simultaneously. However, exogenous ABA raised the anthocyanin concentration under both carbon limitation and appropriate conditions. Carbon limitation and exogenous ABA facilitated the profound evolution of the whole-genome transcriptome and raised the anthocyanin concentration by regulating the transcription levels of genes involved in the anthocyanin biosynthesis pathways as well as those involved in various forms of hormone signaling. In summary, leaf removal and spraying exogenous ABA simultaneously can help to restore the balance between sugars and anthocyanins to improve grape berries' properties by whole-genome transcriptome reconstruction.
Source link: https://doi.org/10.3390/horticulturae8100905
We report the finding of a new abscisic acid metabolite in the course of a mass spectrometric study of ABA metabolism by the rhizosphere bacterium Rhodococcus sp. We obtained mass spectral fragmentation plots and nuclear magnetic resonance spectra of a new metabolite of ABA identified as 1-hydroxy-2,6,6-trimethyl-4-oxo-2-acetic acid, which we identified as 1-hydroxy-2,6,6-trimethyl-4-oxo-2-acetic acid and characterized using several other methods. In comparison to dehydrovomifoliol, which we discussed earlier, this metabolite is the second bacterial ABA degradation product in addition to dehydrovomifoliol.
Source link: https://doi.org/10.3390/biom12101508
Grapevine is a common cultivated fruit throughout the world, and heat stress is one of the most significant challenges to viticulture. At 1 hpt and down-regulated DEGs at R24 hpt, the light-dependent reactions of photosynthesis were highly rich in up-regulated DEGs at 1 hpt and down-regulated DEGs. At short-term post-heat stress management, heat stress hampered the photosynthetic ability of grapevine leaves, and there was a strong positive correlation between photosynthesis and stomatal activity, but the restriction of HS on Pn was non-stomata limitation for a longer period. The PsbP, u2160, and PsbP were more sensitive to heat stress than PsbP and PsbP, as well as Psb28, both played significant roles in heat stress response. Abscisic acid content in heat-stress-treated Kyoho plants was higher than those in the control at 1 hpt, but less in heat-stress-treated plants at 4 and R24 hpt, which was governed by several genes involved in the ABA biosynthesis and catabolism pathways.
Source link: https://doi.org/10.3390/agronomy12102591
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